One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

You can figure out when it's a good idea to plant sorrel in Mound by checking out the USDA zone info.

Planting Calendar for Sorrel

Frost tolerance for sorrel:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Sorrel do ok in some cold which means that you can plant them just a bit earlier in the year than more sensitive plants.

The earliest that you can plant sorrel in Mound is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant sorrel and expect a good harvest is probably August. You probably don't want to wait any later than that or else your sorrel may not have a chance to fully mature. You can get started a little bit earlier by starting your sorrel indoors.

Last Frost Date

On average the last frost is on May 15 in Mound. In the coldest months of winter you can expect an average low temperature of -25°F.

It's important to remember that USDA zone info for Mound is not always accurate and the actual date of last frost can change quite a bit from year to year. Half of the time in Mound there is a last frost after May 15 so make sure that you are prepared to protect your sorrel in the event of a surprise late frost.

USDA Zone Info for Mound

Here is the info for USDA Zone 4b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-25°F
Highest Expected Low	-20°F

This means that on a really cold year, the coldest it will get is -25°F. On most years you should be prepared to experience lows near -20°F.

Plants to Grow in Mound

You may be interested in your other planting guides for Mound.